What temperature control capabilities are available in the thermostatic test chamber?

The constant temperature test chamber is the product placed in the specified temperature and humidity, to see the product's high temperature resistance, low temperature resistance, and humidity resistance, then the constant temperature and humidity machine has the ability to warm, cool, humidify and dehumidify.


Cooling is an important part of the constant temperature test chamber. It is an important parameter for judging the performance of a constant temperature test chamber. It consists of four components: compressor, condenser, throttling device and evaporator. The compressor is the heart of the refrigeration system. It sucks in low-temperature and low-pressure gas, turns into high-temperature and high-pressure gas, releases heat by condensing into liquid, and removes heat through the fan. Therefore, the temperature of the constant temperature and humidity test chamber is caused by hot air, and then by throttling The low-pressure liquid passes through the evaporator to become a low-temperature low-pressure gas and finally returns to the compressor; the refrigerant absorbs heat in the evaporator to complete the gasification process and absorbs heat, thereby achieving the purpose of cooling, and completing the cooling process of the constant temperature and humidity test chamber.

The heating device is a key link for controlling whether the thermostatic test chamber is warmed up; it outputs a voltage to the relay when the controller receives the heating command, and about 2-13 VDC is applied to the solid state relay; its AC terminal is equivalent to the wire connection; The contactor is also sucked at the same time, the voltage is heated at both ends of the heater, and the heat is brought to the box by the circulating fan, so that the constant temperature and humidity machine heats up, and the temperature reaches your set value quickly; the controller is added by Solid state relay on-off regulation; we adjust the heat output on the screen by the constant temperature and humidity machine; this is the temperature control above 89 degrees, how to control the temperature stability below 89 degrees? The constant temperature test chamber is on the one side through the solid state The relay generates more heat; the other is cooled by the compressor refrigeration cycle to achieve dynamic balance; the temperature is constant.

The dehumidification system is also completed by the refrigeration system, and the evaporator is placed in the constant temperature test chamber; relatively cold, the high humidity gas inside the constant temperature test chamber will see the cold object condense into a liquid; thus the high humidity gas of the repeated box will be small, reaching the drop Wet purpose.


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